Geza, What is the temp of your model thermostat? If it is the lower temp one, it opens sooner rather than later and thus the engine takes longer to heat up because all the coolant starts circulating and getting cooled by the radiator loop. I still think this problem is due to something else, not the O2 sensor. If I understand correctly, it is the temp measurement from the Temp II sensor to the ECU that sends the engine into closed loop, not the temp of the O2 sensor. Don't have time to look that up and verify it, but think it is correct. Also, that a part is new doesn't necessarily mean that it isn't the culprit. I once had two or three consecutive bad thermostats in an old Chevy. Engine was reading hot, but the radiator was cold, but it had new thermostats. So, you might need to check the thermostat. If the water pump was not working well, the engine would heat up sooner, not later. The attached files have lots of info on FI system problems and one set focuses on the O2 sensor. Have you checked out your idle stabilizer unit? But read the files before going to all this trouble on the heated O2 sensor. Sam -- Sam Walters Baltimore, MD 89 Syncro GL, Zetec Inside 85 Westy Weekender 85 Mercedes Benz 300D Turbodiesel - to become veggie oil powered All incoming and outgoing email scanned by automatically updated copy of Norton AntiVirus. |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.